MESON Chess Problem Database
Problem Display
PID: 271714 (3nbb2/7r/1Q3p2/N2k4/3N1PB1/Bpp5/qP5p/2R1R1nK w - - 0 1)
Roland, Marcos Maldonado
The Hopper, 2021
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Re7
- 2.Qc5#
- 2.Qd6#
- 1...Bc5
- 2.Qxc5#
- 1...Bd6
- 2.Qxd6#
- 1...Bh6
- 2.Qc5#
- 2.Qd6#
- 1...Bg7
- 2.Qc5#
- 2.Qd6#
- 1...Se2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sh3
- 2.Bf3#
- 1...Sc6
- 2.Be6#
- 1...Se6
- 2.Bxe6#
- 1...Sb7
- 2.Be6#
- 1...Sf7
- 2.Be6#
- 1...f5
- 2.Re5#
- 1...Re7
- Tries
- 1.Sc2?
- threat
- 2.Rcd1#
- 2.Qd4#
- 1...Se2
- 2.Bf3#
- 1...Qb1
- 2.Qd4#
- 2.Qxb3#
- 1...Qa1
- 2.Qd4#
- 2.Qxb3#
- 1...Rh3
- 2.Qd4#
- 1...Bb5
- 2.Qd4#
- 1...Bg6
- 2.Qd4#
- 1...Bc5
- 2.Qxc5#
- 1...Sf3
- 2.Bxf3#
- 1...Sc6
- 2.Be6#
- 1...Se6
- 2.Bxe6#
- 2.Qxe6#
- 1...bxc2!
- threat
- 1.Se2?
- threat
- 2.Sxc3#
- 2.Qd4#
- 1...Ke4
- 2.Qd4#
- 1...Qxb2
- 2.Qd4#
- 1...Sxe2
- 2.Bf3#
- 1...cxb2
- 2.Sc3#
- 2.Qd4#
- 1...Rh3
- 2.Qd4#
- 1...Rc7
- 2.Qd4#
- 1...Bb4
- 2.Qd4#
- 1...Sf3
- 2.Sxc3#
- 2.Bxf3#
- 1...Sc6
- 2.Sxc3#
- 1...Se6
- 2.Sxc3#
- 2.Qxe6#
- 1...c2
- 2.Sc3#
- 2.Qd4#
- 1...f5
- 2.Sxc3#
- 1...Bc5!
- threat
- 1.Sdxb3?
- threat
- 2.Rcd1#
- 2.Qd4#
- 1...Qxb2
- 2.Qd4#
- 1...Se2
- 2.Bf3#
- 1...Qb1
- 2.Qd4#
- 1...Qa1
- 2.Qd4#
- 1...Rh3
- 2.Qd4#
- 1...Bb5
- 2.Qd4#
- 1...Bg6
- 2.Qd4#
- 1...Bc5
- 2.Qxc5#
- 1...Sf3
- 2.Bxf3#
- 1...Sc6
- 2.Be6#
- 1...Se6
- 2.Bxe6#
- 2.Qxe6#
- 1...c2
- 2.Qd4#
- 1...Qxb3!
- threat
- 1.Sf3?
- threat
- 2.Rcd1#
- 2.Qd4#
- 1...Qxb2
- 2.Qd4#
- 1...Sxf3
- 2.Bxf3#
- 1...Qb1
- 2.Qd4#
- 2.Qxb3#
- 1...Qa1
- 2.Qd4#
- 2.Qxb3#
- 1...Bb5
- 2.Qd4#
- 1...Bg6
- 2.Qd4#
- 1...Bc5
- 2.Qxc5#
- 1...Sc6
- 2.Be6#
- 1...Se6
- 2.Bxe6#
- 2.Qxe6#
- 1...c2
- 2.Qd4#
- 1...Se2!
- threat
- 1.Sb5?
- threat
- 2.Sxc3#
- 2.Rcd1#
- 2.Qd4#
- 1...Qxb2
- 2.Qd4#
- 1...cxb2
- 2.Sc3#
- 2.Rcd1#
- 2.Qd4#
- 1...Se2
- 2.Bf3#
- 1...Qb1
- 2.Sxc3#
- 2.Qd4#
- 1...Qa1
- 2.Sxc3#
- 2.Qd4#
- 1...Rh3
- 2.Sc7#
- 2.Qd4#
- 1...Rc7
- 2.Sxc7#
- 2.Rcd1#
- 2.Qd4#
- 1...Bg6
- 2.Sxc3#
- 2.Qd4#
- 1...Bb4
- 2.Rcd1#
- 2.Qd4#
- 1...Bc5
- 2.Qxc5#
- 1...Sf3
- 2.Sxc3#
- 2.Bxf3#
- 1...Sc6
- 2.Sxc3#
- 2.Be6#
- 1...Se6
- 2.Sxc3#
- 2.Bxe6#
- 2.Qxe6#
- 1...c2
- 2.Sc3#
- 2.Qd4#
- 1...Bxb5!
- threat
- 1.Sf5?
- threat
- 2.Rcd1#
- 2.Qd4#
- 1...Qxb2
- 2.Qd4#
- 1...Se2
- 2.Bf3#
- 1...Qb1
- 2.Qd4#
- 2.Qxb3#
- 1...Qa1
- 2.Qd4#
- 2.Qxb3#
- 1...Rh3
- 2.Qd4#
- 1...Bb5
- 2.Qd4#
- 1...Bc5
- 2.Qxc5#
- 1...Sf3
- 2.Bxf3#
- 1...Se6
- 2.Qxe6#
- 1...c2
- 2.Qd4#
- 1...Sc6!
- threat
- 1.Sdc6?
- threat
- 2.Rcd1#
- 2.Qd4#
- 1...Qxb2
- 2.Qd4#
- 1...Bxc6
- 2.Rcd1#
- 1...Sxc6
- 2.Be6#
- 1...Bc5
- 2.Qxc5#
- 1...Qb1
- 2.Qd4#
- 2.Qxb3#
- 1...Qa1
- 2.Qd4#
- 2.Qxb3#
- 1...Rh3
- 2.Qd4#
- 1...Bg6
- 2.Qd4#
- 1...Sf3
- 2.Bxf3#
- 1...Se6
- 2.Bxe6#
- 1...c2
- 2.Qd4#
- 1...Se2!
- threat
- 1.Se6?
- threat
- 2.Rcd1#
- 2.Qd4#
- 1...Qxb2
- 2.Qd4#
- 1...Sxe6
- 2.Bxe6#
- 1...Se2
- 2.Bf3#
- 1...Qb1
- 2.Qd4#
- 2.Qxb3#
- 1...Qa1
- 2.Qd4#
- 2.Qxb3#
- 1...Rh3
- 2.Sc7#
- 2.Qd4#
- 1...Bb5
- 2.Qd4#
- 1...Bg6
- 2.Qd4#
- 1...Bc5
- 2.Qxc5#
- 1...Sf3
- 2.Bxf3#
- 1...c2
- 2.Qd4#
- 1...Sc6!
- threat
- 1.Qxb3+?
- 1...Kxd4
- 2.Rcd1#
- 2.Qd1#
- 1...Qxb3!
- 1...Kxd4
- 1.Qb5+?
- 1...Kxd4
- 2.Rcd1#
- 2.Qc4#
- 2.bxc3#
- 1...Bc5
- 2.Qxc5#
- 1...Bxb5!
- 1...Kxd4
- 1.Qe6+?
- 1...Kxd4
- 2.Rcd1#
- 2.Red1#
- 2.Qc4#
- 2.Qe4#
- 1...Sxe6!
- 1...Kxd4
- 1.Qxf6?
- threat
- 2.Qe5#
- 1...Sc6
- 2.Be6#
- 1...Re7
- 2.Qd6#
- 1...Bd6
- 2.Qxd6#
- 1...Bg7
- 2.Qd6#
- 1...Sf3
- 2.Bxf3#
- 1...Sf7
- 2.Be6#
- 1...Rh5!
- threat
- 1.Sc2?
- Keys
- 1.Rcd1!
- threat
- 2.Sc2#
- 2.Sdxb3#
- 2.Sf3#
- 2.Sb5#
- 2.Sf5#
- 2.Sdc6#
- 2.Se6#
- 1...Qxb2
- 2.Sc2#
- 1...Se2
- 2.Bf3#
- 1...Sc6
- 2.Sdxc6#
- 2.Be6#
- 1...Qb1
- 2.Qxb3#
- 1...Qa1
- 2.Qxb3#
- 1...Rh3
- 2.Sf3#
- 1...Bb5
- 2.Sxb5#
- 1...Bc6
- 2.Sc2#
- 2.Sdxb3#
- 2.Sf3#
- 2.Sb5#
- 2.Sf5#
- 2.Sdxc6#
- 2.Se6#
- 1...Bg6
- 2.Sf5#
- 1...Bc5
- 2.Qxc5#
- 1...Sf3
- 2.Sxf3#
- 2.Bxf3#
- 1...Se6
- 2.Sxe6#
- 2.Bxe6#
- 2.Qxe6#
- 1...c2
- 2.Sxc2#
- 1...f5
- 2.Sc2#
- 2.Sdxb3#
- 2.Sf3#
- 2.Sb5#
- 2.Sxf5#
- 2.Sdc6#
- 2.Se6#
- 2.Re5#
- threat
- 1.Rcd1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 8
- Sets
- B(k);N_GUARD::QAR1(J),XB(k)
- S(a);N_GUARD::B(H)
- S(a);N_GUARD::B(H),XS(a)
- S(i);N_GUARD::B(H)
- S(i);N_GUARD::B(H),XS(i)
- P(g);N_GUARD::R1(B)
- Tries
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- S(a);N_GUARD::B(H)
- R(h);::QAR1(J)
- B(j);::QAR1(J)
- B(k);N_GUARD::QAR1(J),XB(k)
- S(a);N_GUARD::B(H),XS(a)
- S(i);N_GUARD::B(H)
- Refutation
- P(d);XS(F)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- K(f);S_FLIGHT::QAR1(J)
- Q(b);XP(D)::QAR1(J)
- S(a);N_GUARD,XS(F)::B(H)
- R(h);::QAR1(J)
- B(k);::QAR1(J)
- S(i);::S(F),XP(e)
- P(g);::S(F),XP(e)
- Refutation
- B(k);
- Try
- S(F);XP(d)
- Threat
- DUALS(2)
- Vars
- Q(b);XP(D)::QAR1(J)
- S(a);N_GUARD::B(H)
- Q(b);::QAR1(J)
- R(h);::QAR1(J)
- B(j);::QAR1(J)
- B(k);N_GUARD::QAR1(J),XB(k)
- S(a);N_GUARD::B(H),XS(a)
- S(i);N_GUARD::B(H)
- P(e);::QAR1(J)
- Refutation
- Q(b);XS(F)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- Q(b);XP(D)::QAR1(J)
- S(a);OGATE,XS(F)::B(H),XS(a)
- B(j);::QAR1(J)
- B(k);N_GUARD::QAR1(J),XB(k)
- S(i);N_GUARD::B(H)
- P(e);::QAR1(J)
- Refutation
- S(a);
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- Q(b);XP(D)::QAR1(J)
- S(a);N_GUARD::B(H)
- B(k);N_GUARD::QAR1(J),XB(k)
- Refutation
- B(j);XS(F)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- Q(b);XP(D)::QAR1(J)
- S(a);N_GUARD::B(H)
- R(h);::QAR1(J)
- B(j);::QAR1(J)
- B(k);N_GUARD::QAR1(J),XB(k)
- S(a);N_GUARD::B(H),XS(a)
- S(i);N_GUARD::QAB1(J),XS(i)
- P(e);::QAR1(J)
- Refutation
- S(i);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- Q(b);XP(D)::QAR1(J)
- B(j);XS(F)::R(A)
- S(i);N_GUARD,XS(F)::B(H)
- B(k);N_GUARD::QAR1(J),XB(k)
- R(h);::QAR1(J)
- B(j);::QAR1(J)
- S(a);N_GUARD::B(H),XS(a)
- S(i);N_GUARD::B(H),XS(i)
- P(e);::QAR1(J)
- Refutation
- S(a);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- Q(b);XP(D)::QAR1(J)
- S(i);OGATE,XS(F)::B(H),XS(i)
- S(a);N_GUARD::B(H)
- B(j);::QAR1(J)
- B(k);N_GUARD::QAR1(J),XB(k)
- S(a);N_GUARD::B(H),XS(a)
- P(e);::QAR1(J)
- Refutation
- S(i);
- Try
- Q(J);CHECK,XP(d)
- Refutation
- Q(b);XQ(J)
- Try
- Q(J);CHECK
- Vars
- B(k);N_GUARD,P_SPINB(k)::QAR1(J),XB(k)
- Refutation
- B(j);XQ(J)
- Try
- Q(J);CHECK
- Refutation
- S(i);XQ(J)
- Try
- Q(J);XP(g)
- Threat
- QAR1(J)
- Vars
- S(i);N_GUARD::B(H)
- R(h);S_CUTB(k)::QAR1(J)
- B(k);N_GUARD::QAR1(J),XB(k)
- B(k);N_GUARD::QAR1(J)
- S(a);N_GUARD::B(H),XS(a)
- Refutation
- R(h);
- Try
- Actual
- R(A);
- Threat
- DUALS(7)
- Vars
- Q(b);XP(D)::R(A)+S(F)
- S(a);N_GUARD::B(H)
- Q(b);N_GUARD::QAB(J),XP(d)
- R(h);::R(A)+S(F)
- B(j);::R(A)+S(F),XB(j)
- B(j);::R(A)+S(F)
- B(k);N_GUARD::QAR1(J),XB(k)
- P(e);::R(A)+S(F),XP(e)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).